The Greater Yellowstone Ecosystem%2C along with Montana and Idaho%2C are said to be free of Chronic Wasting Disease but for how long%3F  Some scientists say the deadly disease is already here. Map showing the progression of CWD in the U.S. and Canada courtesy U.S. Geological Survey%27s National Wildlife Health Center
The Greater Yellowstone Ecosystem%2C along with Montana and Idaho%2C are said to be free of Chronic Wasting Disease but for how long%3F Some scientists say the deadly disease is already here. Map showing the progression of CWD in the U.S. and Canada courtesy U.S. Geological Survey%27s National Wildlife Health Center